The following is a reprint of an article comparing performance and price
of the PowerTech! TRO4 blade style with props by other leading manufacturers.
Your comments and questions are welcome at sales@ptprop.com
.
PowerTech! TRO4R28
This is a small-tube four-blade prop that allows exhaust gasses to flow both
through and across the tube and into the blades. This can cause
ventilation problems either on initial acceleration or as the boat breaks onto a
plane. There were no problems with the PowerTech. The visual
appearance of this prop is very close to the Mercury Trophy, but notice the
difference in acceleration times and top speed.
The PowerTech TRO4 demonstrated another important factor that shows just how
critical setup and engine height can be to good handling and maximum
performance. We started our testing with the propshaft setting at 3- 1/4
inches below the bottom of the hull. At this point, chine walking and
steering torque was a handful. Each 1/4 inch up reduced both steering
torque and the tendency to chine walk and when we were up a full three-quarters
of an inch (propshaft 2-1/2 inches below the bottom of the boat), steering
torque was greatly reduced and the tendency to chine walk had just about
disappeared.
This is an excellent prop.
"reprinted with permission from Bass & Walleye Boats Magazine"
prop
performance The table indicates brand, size and style, propshaft
centerline to hull bottom (engine height), speed, rpm and 0-to-30 mph
time.